Reamer tool for pipes and the like



Jan. l'l, 1949. T. A. cALlENDo 2,458,681

REAMER- TOOL FOR PIPES AND THE LIKE v Filed Dc. f?. 1945 s sheets-sheet1 '4 lNvgNTnk THOMAS A. CFILIENDO HTTORNEY Jan. 11, 1949. T. A. CALIENDOBEAMER TooL EOE PIPES AND TEE LIKE Filed Dec. 7, 1945 3 Sheets-Sheet 2INVENToR THOMAS A. CALIENDO HTTGRNEY Patented Jan. 11, 1.949

UNIrfED. sien-:s oFFlCE BEAMER 'rooLFoR PIPES AND THE LIKE Thomas' A.saliendo, south caorle Bark, n. Y.' Applioation December 7, 1945, serialNo. 633,452`

This invention relates to newand useful improvements in tools. i

More speciiically, the present invention proposes the construction ofatool adapted to ream the `inside burr Ifrom the end `'of a pipe thathas .been cut, veither with the threading of the cut end'or separatelytherefrom.

A further object is to 'provide a tool as aforesaid including'a`pipe-threadingv stock and a pipe reaming attachment "for -the'stockincluding an adjustable support-for a reamer and means for holding thereamer againstrrotation relative to the support. f

Still'- another object is'to provide a pipe reaming toolv including avertically adjustable support, a pipe reamer securedto-the supportagainst rotation relative thereto, means for'securing the support to apipe threading stock, andv other means for securing the supporttotheendvofra pipetoberea-med. f

A further object is to provide a pipe reaming tool 4including avertically adjustablev support, a'pipe reamer securedto thev supportforrotation relative thereto, means for= securing the support to a' pipe'threading stock, otherimeans for securing thesupport` to :the end'of aipipe toibe reamed, and a ratchet handle-*for turning thereamer. f f'For-further comprehension of the invention, and' of the objects andadvantages thereof; reference will be had to 'the' following'descriptionand accompanying drawings-and to the appended claims in which' thevarious -novel *features of the invention are more particularlysetforth.'-

In -the accompanying drawing iorminga-materialpartofthis disclosurez-- fFigfl is a perspective View of a pipe reaming tool constructed inaccordance Withthis invention. o

Fig. 2 is a section on the line 2-2of Fig. 1.

Fig. 3 is a section on the line 3 3 of Fig. v2.

Fig. 4 is a perspective viewof a part of -the tool.

Fig. 5 is a perspective view'ofV a-reamerY-forming part ofthe tool.

Fig-6 is aside elevation'oi a pipe threading and reaming toolconstructed lin-accordancewith a'modication of this invention.-

'Fig. 7 is aplan View of Fig. 6.`

Fig. V8 is a section on the line 8 8 of Fig. 6.

Fig. 9 is a perspective view'of a pipe which has been threaded andreamed. 1 I

Referring nrst to Figs. 1-5, wherein a pipe rearning tool is shownembodying lthe present invention, thisY tool includes la verticallyIadjust-r able support. LIL This support includes a...ring.

l clams'. (o1. 1jr-'ith IIJ having internal threads I2, lateral lugs I3having, orifices-Ill1 and'fupstanding guides I5A each' havingv athreaded*'oriceg'liat its upper end. The 'guides are rectangular in.crossv section. The lugs are lfor use in bolting the support toa pipethreading stock, vif. desired,` and the threads I2 areforscrewing theyring, and thusthe support on the threaded end of a pipe to be'reamed, if

desired.-WV f `The supportL further includes a `yoke I1 havingl verticaldistance between the bar I9-and the ring II may be adjusted'to as manypositions as there areorices2I-. AThree orti-lees ZIv are shown in thepresent instance. Each bolt 22 has `afslotdsed head 23. There is a bolt22 for each leg I8.

A washer'24 isdisposed on top of bar I9 over bore 2ll-v and a'shoulderedbolt 25, havinga slotted head 25, is dis-posed inv this bore-20 and isthreaded in-toaJ threaded recess 21-in thefstem 28 of a reamer 29,the'reamer having the usual conical head 30-provided with helicalcutting bladesf3l. The reamer is'- disposed vertically in the supportbetween the guidesY I5 andthe recess 21 is vertical. M- I Al ratchetdevice 32 is secured on the stem 28,'for turn-ing the reamer. The stem28 `is square in cross section; and' the ratchet device includes atoothed member-33 disposed on the square stem andresting on top of thereamer head 30'y a ring 34 carrying a ratchet'fpawl l35yfor rotationrelative to the'- member 33 and adapted toV coact therewith to turn thereamer, `and a handle 36 integrallwith -the ring 34 and extendingoutwardly between the guides I5 Thus the handle can be rotated betweentheguides I5, or slightly less than `180 ldegrees.- The'ratchet deviceoper- `ates "according to Well known principles and no furtherdescription thereof 'is deemed necessary.

Awasher 3] is supported on top ofV the ring 34 and a coill spring 38 iscompressed between the Washer-3l and the bar I9 by the screwor bolt25.-- The coil-spring holds the ratchet device against therea-merhead'and lforces the reamer 3 downwardly against the end of thepipe to be reamed.

The operation of the tool is as follows:

Assuming that the tool is not to be used with any other tool, but is tobe used directly as a pipe reamer, the pipe is threaded into the threadI2 of the ring Il, or if the thread I2 is too large, a reducer isemployed. Thus it will be seen that the tool, when used alone, must beused with a threadn ed pipe although it may be adapted to be used withan unthreaded pipe if some other securing means for the unthreaded pipe,to which the lugs I3 may be bolted, is provided.

The reamer has a long slender taper, adapting it to fit a long range ofpipe sizes. It may be adjusted vertically relative to the ring I I byremoving the bolts 22 from their position in Fig. 3 (lowest position)and by sliding the yoke upwardly in the guides and :placing the bolts 22back in other orices 2|.

The reamer having been set in its correct position, and the pipeinitially threaded into the ring II, the lpipe is then turned relativeto the ring, or vice versa, until the burr of the cut end of the pipeengages the reamer. The handle 3B is then moved back and forth in themanner usual with ratchet handles, turning the reamer to remove theburr. `As the burr is reamed away, the spring forces the reamer along tokeep removing the burr. The tension of the spring can be regulated bythe extent that the pipe is turned into the threads I2. That is to say,looking at Fig. 3, it will be noticed that there is clearance above thestem of the reamer, and the pipe to be reamed can be turned into thethreads I2 suiciently to force the reamer to the bar I9, thuscompressing the spring. As the burr is reamed, the reamer will return tothe position shown in Fig. 3.

The principle of the reaming tool, as thus described, is adaptable to athreading and reaming tool, or in fact, the tool as thus far described,can be used with a conventional threading stock so that a pipe can besimultaneously threadedrand ieamed. However, as will presently appear, apart must be added to the reaming tool to adapt it for this use.

The combination pipe threading and reaming tool is shown in Figs. 6-8.It includes all the parts or the tool of Figs. 1-5 and thus similarparts are represented by like references with an accent added and nofurther description thereof is deemed necessary. The tool of Figs. 6-8distinguishes from the tool of Figs. las follows:

The pipe reaming tool Ill includes, in addition to the structurepreviously described, a bar 4I which is retained in the channels of thelegs IS and which has a square hole 42 in which the square stem 2S ofthe reamer is disposed, the channels preventing the bar 4I from turningand the bar 4I preventing the reamer from turning relative to thesupport. The spring 38' bears against the under surface of the bar 4I.

The lugs I3' are bolted, by bolts 43 to a pipe threading stock 44, withthe ring II concentric with the center bore 45 of the stock. The stockhas opposite handles 46 by means of which the stock can be turned. Thebore 45 is in a boss II'I, in the bottom of which is fitted a ring 48secured to the boss by a set screw 49. The ring 48 is of an insidediameter suitable to receive a certain pipe, and it may be replaced byother rings to iit other size pipes.

Guides 58 are formed on two opposite sides of the bore d5 andthread-making dies 56 are slidably disposed in the guides. Lugs 5`Iextend upwardly 4 at the ends of the dies 56 and these lugs havethreaded orices for set screws 58 which form an adjustable abutment forthe dies.

A pipe 59f, to `be threaded and reamed, is passed upwardly through thebore 45, being guided by the ring 48, until it is in` correct positionto be threaded by the dies. The reamer is also set so that toward theend of the threading, the reamer will come into operative engagementwith the burr to be reamed. The dies are moved into their correct'position by the screws 58.

To carry out the simultaneous threading and reaming, the pipe is securedin a vise or other means, and the two handles 46 are manually graspedand the tool rotated. First the threading takes place until the rearnerengages the burr of the pipe, and then the threading continuessimultaneously with the reaming of the burr. When the threading has beenfinished, the reaming will also be finished, the reamer having been setso that this will be true.

From the foregoing, it will be seen that a reaming tool has been devisedfor manually reaming a threaded pipe. Furthermore, this same tool canhave added theretoal part to hold the reamer stationary relative to therest of the tool, and a pipe theading stock. The tool thus devised isadapted to simultaneously thread and ream a pipe.

in. both tools, thev spring permits the reamer to move up and down, ifnecessary, to prevent jamming as the reamer cuts into the burr.

While I have illustrated and described the preerred embodiments of myinvention, it is to be understood that I do not limit myself to the i'precise constructions herein -disclosed and the right is reserved to al1changes and modications coming within the scope of the invention asdefined in the appended claims.

Having thus described my invention, what I claim as new and desire tosecure by United States Letters Patent is:

l. A manual pipe reaming tool for reaming out the burr from the cut'endof a pipe comprising a ring, opposed guides, rectangular in crosssection, extending from opposite sides of one face of said ring, saidguides having opposed threaded orifices, a yoke having channeled legsslidably mounted on said guides and a cross bar connecting said legs,said legs each having a row of unthreaded orices, set screws adapted tobe disposed in correlated orices of said legs and to be threaded in saidguide orices to adjustably secure said yoke to said guides, said barhaving an unthreaded orifice concentric with said ring, a shoulderedbolt in said bar orice, a reamer having a conical head and a squarestem, said stem having a threaded axial recess into which said bolt isscrewed, a coil spring compressed between said head and yoke fornormally urging said reamer away from said bar, said stem normallyb-eing spaced from said bar, and means for causing relative movementbetween said pipe and reamer to effect said reaming.

2. A manual pipe reaming tool for reaming out the burr from the cut endof a pipe comprising a ring, opposed guides, rectangular in crosssection, extending from opposite sides of one face of said ring, saidguides having opposed threaded orifices, a yoke having channeled legsslidably mounted on said guides and a cross bar connecting said legs,said legs each having a row of unthreaded orifices, set screws adaptedto be disposed in correlated orices of said legs and to be threaded insaid guide orices to adjustably secure said yoke to said guides, saidbar having an unthreaded orifice concentric with said ring, a.shouldered bolt in said bar orice, a reamer having a conical head and asquare stem, said stem having a threaded laxial recess into which saidbolt is screwed, a coil spring compressed between said head and yoke forvnormally urging said reamer away from said bar, said stem normallybeing spaced from said bar, and means for causing relative movementbetween said pipe and reamer to eiect said reaming, said means includinga ratchet device disposed on said square stem and having a handleprojecting between said guides.

3. A manual pipe reaming tool for reaming out the burr from the cut endof a pipe comprising a ring, opposed guides, rectangular in crosssection, extending from opposite sides of one face of said ring, saidguides having opposed threaded orifices, a yoke having channeled legsslidably mounted on said guides and a cross bar connecting said legs,said legs each having a row of unthreaded orifices, set screws adaptedto be disposed in correlated orices of said legs and to be threaded insaid guide orifices to adjustably secure said yoke to said guides, saidbar having an unthreaded orice concentric with said ring, a shoulderedbolt in said bar orifice, a reamer having a conical head and a squarestem, said stem having a threaded axial recess into which said bolt isscrewed, a coil spring compressed between said head and yoke fornormally urging said reamer away from said bar, said stem normally beingspaced from said bar, and means for causing relative movement betweensaid pipe and reamer to effect said reaming, said means including a pipethreading stock secured to said ring.

4. A pipe reamer, comprising a ring for engagement on a pipe to bereamed, a bar extended across said ring at a point spaced from one sidethereof and formed with a bore concentric with said ring, meansadjustably connecting said bar to said ring for varying the spacingbetween the adjacent faces thereof, a reamer within said ring and formedwith a stem extended toward said bar, said stem being formed at its freeend with a threaded opening aligned with said bore, means on said reamerfor turning the same, a headed bolt freely rotatively and longitudinallyslidably extended through the bore of said bar and threadedly engagingthe opening of said stern for rotatively and longitudinally slidablysupporting said reamer on said bar, said bolt having its head disposedon the outer side of said bar, and a spring on said stem operatingbetween the adjacent faces of said reamer and said bar for urging saidreamer and bolt into a longitudinal position in which the head of saidbolt will be in facial contact with the outer face of said bar.

THOMAS A. CALENDO.

REFERENCES CITED The following references are of record in the tile ofthis patent:

UNITED STATES PATENTS

